Combination lock



Aug. 8 1944. s. s. KARAVIA 4 2,355,301

COMBINATION LOCK Filed June 2a, 1945 2 Sheets-Sheet 1 Fl 7 Fl 6.5

ASVOPH/E 5: ZARA l/IA INVENTOR ATTORNEY AS 8 1944. s. s. KARAVIA I 2,355,301

COMBINATION LOCK Filed June 28, 194: 2 Sheets-Sheet 2 Fl 6.8 F: G. 9

. 5 I? An 9 l G14 H 4 L 2 v 38 i SOPH/E YA ERA V/A INVENTOR ATTORNEY Patented Aug. 8, 1944 IUNITED STAT COMBINATION LOCK Sophie S. Karavia, New York, N. Y. Application June 28, 1943, Serial No. 492,490

4 Claims.

My invention relates to combination locks and has particular reference to combination locks for bags, brief cases, satchels, boxes, and similar objects.

My invention has for its object to provide a combination lock in which the main body can be attached to a bag or box and provided with a concealed slot in which the keeper part of the lock, attached to the cover of the bag or box, can be inserted and engaged by a locking bolt, movable transversely of the body of the lock, the bolt being locked in the engaged position by turning combination dials on the body of the lock.

. My invention is more fully described in the accompanying specification and drawings in which:

Fig. 1 is a sectional elevational-view of my lock with a keeper in alocked position;

: Fig. 2 is a similar view of the lock in an unlocked position; Fig. 3 is a front View of the lock;

Fig. 4 is a rear view ofthe lock with the base plateremoved;

Figs. 5 and 6 are detail main body of the lock;

Fig. '7 is a detail view of a first dial disc;

Figs. 8 and 9 are detail views of a second disc;

Fig. 10 is a detail view of a third disc;

Fig. 11 is a detail view of a central stud;

Fig. 12 is a detail view of a locking pin;

Fig. 13 is afront View of a brief case with my lock;

views of the first or Fig. 14 is a sectional viewof my lock attached to a trunk.

My combination lock consists of a main body or disc I to which a base plate 2 can be attached as by screws 3. The base plate has holes for attaching it to the front wall 40f a bag or box 5 as by rivets 6. I A spacer disc 'I is interposed between the body I and the plate 2 and is provided with holes 5' for the screws 3 and a slot 8 for receiving a keeper plate 9 in the .form of a tongue extending from a plate I0 attached to the cover I I of the box or bag as by rivets I2. The keeper plate has an elongated slot I4 engaged by the lower end of a sliding locking bolt I5. The bolt I5 has oppositely disposed flat wings I6, I! sliding in a slot I8 in the main body I. The wings are longer in axial direction than the thickness of the spacer plate 'I so that in the locked position the wings partly engage the slot I8, preventing rotation of the bolt I5 as well as its transverse displacement.

The body I is provided on the outer side with a hub I9 (Figs. 5 and 6) on which a dial disc is rotatively mounted. The hub is also slotted for the wings I6, I! and is of a smaller diameter than the diametrical width of the wings so that the latter can engage a corresponding slot 21 in the disc 20 when the bolt is withdrawn into its upper or unlocking position as shown in Fig. 2. The wing I6 has shoulders at 22 to a diame ter corresponding to the diameter of the hub so that the disc 20 can freely turn on thehub when the bolt I5 is moved down into the locking position as shown in Fig. 1. It may be noted that the second ring 20 will prevent the withdrawal of the bolt when the ring is rotated on the hub and the slot 2I is displaced, thetips of the wings I6, I! being then held by the disc20. The bolt I5 can be raised into the unlocking position as the disc 20 is placed in a position in which the slot 2| registers with the slot I8. The correct position is reached when a certain symbol or numeral 23 on the disc 20 registers with a mark 24 on the body I. The disc 20 is of a smaller diameter than the'body so that any desired symbol 23 can be easily placed opposite the mark 24.

The hub I9 is recessed at 25 for a second hub 26 of a smaller diameter, rotatively mounting a second disc 21. The disc 21 is also providedwith a slot 28 for a shoulder 22 of the wings of the bolt l5. The axial length of the shoulder 22 is such that when the bolt is moved down into the locking position, the shoulder is also moved from under the disc 2'! and the latter can be rotated on the hub 26. The disc 21 is placed in the un-. locked position by turning the same until a certain of the sym ols 23 registers with the mark 24.

Thehub I9 is drilled and tapped for a central stud. 29 with a central hole 30 for the bolt I5 and slots 3| for the wings ofthe bolt. The stud forms a shaft for supporting a third disc 32, retained in position by a head 33 of the stud,- engaging a corresponding hole in the disc. The disc 32 is provided with a slot 35 for a second shoulder or .lug 36 on the wings of the bolt. The radial distance of the lug from the axis of the bolt corresponds to the radius of the hole .in the disc 21 so that the latter can be rotated when the bolt is in the locking. position, but the bolt cannot-bewithdrawn until the disc 32 is turned into a position in which the slot 35 registers with the slots in the other discs, this position being indicated by a certain of the symbols 3'I registering with the mark 24.

A handle 38 is attached to the outer end of the bolt I-5 for movin the bolt in and out of its locking position.

It should be noted that the lock cannot be taken apart from the outside since the bolt I5 prevents rotation of the central stud 29, and the bolt itself is locked by the rings.

To unlock my lock the discs must be turned into definite positions indicated by a key number of the combination of numerals or symbols, the discs being provided with recesses or notches 39' to facilitate manual rotation of the discs.

Although the lock is shown with three discs, it is understood that any suitable number of the movable discs may be employed. The wings on the locking bolt will then have a corresponding number of the shoulders of progressively reduced diameters, corresponding to the progressively reduced diameters of the central holes in the discs. The bolt will be thereby stopped or barred by every disc engaging the next larger shoulder when the bolt is moved out to engage the keeper.

My lock is especiall suitable for suitcases, brief cases, satchels, boxes, an similar articles.

An adaptation of my lock to an ordinary trunk is shown in Fig. 14. The lock is provided with a relatively long and strong bolt 40, passing through the thickness of a wall 4| of the box. A rear plate 42 is fastened on the inside by rivets 43, forming a pocket for th keeper 9, attached on the inside to the cover 44 of the trunk by rivets 45. The operation of this lock is substantially the same as described in connection with the lock shown in Fig. 1.

It is understood that my combination .lock may be further-modified Without departing from the spirit of my invention as set forth in th appended claims.

I claim as my invention:

1. A combination lock comprising a base adapted to be attached to the'side of a container and provided with a slot extending from its side to its middle portion, the slot being adapted to receive a; keeper plate attached .to the side of a cover of the container; a hub extending outward from the base plate; discs with central holes of progressively decreasing diameters rotatively mounted on the hub, the hub having a central hole; a locking member movably supported in the central hole adapted in its operative position to engage the keeper for preventing the same to be withdrawn from the base; a wing on the locking member, the base and the hub having a slot for the wing; means on the base to limit the movements of the locking member; the discs having slots for the wing; and means on the discs to indicate their positions in which the slots in the discs register with the slot in the base, and

the locking member is free to be withdrawn from 5 in the central hole adapted in its operativ position to engage the keeper plate for preventing its withdrawal from the base plate; a wing on the locking member with a plurality of shoulders of radial dimensions corresponding to the radial dimensions of the hub shoulders, the base and the hub having a slot for the wing; the discs having slots for the wing of progressivel reduced radial length; the wing shoulders being adapted to release the discs for rotation when the locking member is placed in the operative positions, the discs thereby locking th locking member in the operative position; and means on the discs to indicate their positions in which the locking member is free to be moved out of engagement with the keeper plate.

3. A combination lock comprising a base adapted to be attached to the side of a container and provided with a slot extending from its side to its middle portion, the slot being adapted to receive a keeper plate attached to the side of a cover of the container; a hub extending from the base plate having a plurality of shoulders of progressively reduced diameters; a plurality of discs rotatively mounted on the hub shoulders; a hollow stud threaded into the base plate and into the hub; a locking member slidably supported in the hollow portion of the stud adapted in its operative position to engage the keeper plate; a Wing at the side of the looking member, the base plate, the stud and the hub having a common slot for the wing; a disc rotatively mounted on the hub having a slot for the wing; and means on the disc to indicate its position in which the disc slot registers with the base slot for allowing the locking member to'be withdrawn into an inoperative position.

4. A combination lock comprising a base adapted to be attached to the side of a container and provided with a slot extending from its side to its middle portion, the slot being adapted to receive a keeper plate attached to the side of a cover of the container; a hub extending from the base plate having a plurality of shoulders of progressively reduced diameters;,a plurality of discs rotatively mounted on the hub shoulders; the base and the hub having a central hole; a central stud threaded into the hub and provided with an axially extending hole; a locking bolt slidably fitted in the hole in the stud, the inner end of thebolt being adapted to engagexthe keeper plate for locking the plate inthebase;

a wing on the locking member with a plurality of shoulders of progressively reduced radial di mensions, the base plate and the hub having a slot for the .wing, the discs having slots ofprogressively reduced radial dimensions correspondin to the wing shoulders, the discs being adapted to be manually rotated for placing the slots in register with the base slot for permitting withdrawal of the bolt from the keeper plate, the discs being adapted to engage the corresponding wing shoulders when the bolt is in the operative position and the discs displaced from the unlocking positions.

SOPHIE S. KARAVIA. 

